Butterfly valves are provided with internal supervisory position switches. The tamper switch operates by a cam connected to the valve stem. The switch will change position and close within two full turns of the handwheel from the fully open position.

Material Specification

Part Name

Material

EN Spec.

ASTM Spec.

Valve

Body

Ductile Iron

EN-JS1050

A536 65-45-12

Disc

Ductile Iron

EN-JS1050

A536 65-45-12

Shaft

Stainless Steel

BS970 431S29

AISI431

Bushing

Brass

CuZn39Pb3

B16 C36000

Gear Operator

Housing

Cast Iron

EN-JL1040

A126 Class B

Cover

Cast Iron

EN-JL1040

A126 Class B

Wormgear

Brass

CuZn39Pb3

B16 C36000

Worm

Stainless Steel

BS970 420S37

AISI420

Handwheel

Cast Iron

EN-JL1040

A126 Class B

Size

A

B

D

E

C

F

G

H

L

M

DN50

110

74

90

43

120

170

65

155

150

200

DN65

118

85

90

46

DN80

130

95

90

46

DN100

145

115

90

51.5

DN125

160

130

90

56

DN150

175

145

90

56.5

DN200

200

170

125

60

160

225

85

206

200

300

DN250

250

208

125

68.5

DN300

275

237.5

125

79.5

Packing Details:

Each pc into one bubble plastic bag, several pcs into one wooden case; Wooden packing will protect the goods from damage during transportation